20992020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{331}}^1$

素因数の和:501

約数の個数: 96

約数和(自身を含む): 67823616

約数和(自身を除く): 46831596

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 151, 210, 302, 331, 420, 453, 604, 662, 755, 906, 993, 1057, 1324, 1510, 1655, 1812, 1986, 2114, 2265, 2317, 3020, 3171, 3310, 3972, 4228, 4530, 4634, 4965, 5285, 6342, 6620, 6951, 9060, 9268, 9930, 10570, 11585, 12684, 13902, 15855, 19860, 21140, 23170, 27804, 31710, 34755, 46340, 49981, 63420, 69510, 99962, 139020, 149943, 199924, 249905, 299886, 349867, 499810, 599772, 699734, 749715, 999620, 1049601, 1399468, 1499430, 1749335, 2099202, 2998860, 3498670, 4198404, 5248005, 6997340, 10496010, 20992020]

約数ペア:

[(1, 20992020), (2, 10496010), (3, 6997340), (4, 5248005), (5, 4198404), (6, 3498670), (7, 2998860), (10, 2099202), (12, 1749335), (14, 1499430), (15, 1399468), (20, 1049601), (21, 999620), (28, 749715), (30, 699734), (35, 599772), (42, 499810), (60, 349867), (70, 299886), (84, 249905), (105, 199924), (140, 149943), (151, 139020), (210, 99962), (302, 69510), (331, 63420), (420, 49981), (453, 46340), (604, 34755), (662, 31710), (755, 27804), (906, 23170), (993, 21140), (1057, 19860), (1324, 15855), (1510, 13902), (1655, 12684), (1812, 11585), (1986, 10570), (2114, 9930), (2265, 9268), (2317, 9060), (3020, 6951), (3171, 6620), (3310, 6342), (3972, 5285), (4228, 4965), (4530, 4634)]